Ultrafast dynamics and phonon softening in Fe1+ySe1-xTex single crystals
| dc.citation.epage | en_US | |
| dc.citation.issue | en_US | |
| dc.citation.volume | 14 | en_US |
| dc.citation.woscount | 6 | |
| dc.contributor.author | Luo, C. W. | en_US |
| dc.contributor.author | Wu, I. H. | en_US |
| dc.contributor.author | Cheng, P. C. | en_US |
| dc.contributor.author | Lin, J-Y | en_US |
| dc.contributor.author | Wu, K. H. | en_US |
| dc.contributor.author | Uen, T. M. | en_US |
| dc.contributor.author | Juang, J. Y. | en_US |
| dc.contributor.author | Kobayashi, T. | en_US |
| dc.contributor.author | Wen, Y. C. | en_US |
| dc.contributor.author | Huang, T. W. | en_US |
| dc.contributor.author | Yeh, K. W. | en_US |
| dc.contributor.author | Wu, M. K. | en_US |
| dc.contributor.author | Chareev, D. A. | en_US |
| dc.contributor.author | Volkova, O. S. | en_US |
| dc.contributor.author | Vasiliev, A. N. | en_US |
| dc.contributor.department | 電子物理學系 | zh_TW |
| dc.contributor.department | 物理研究所 | zh_TW |
| dc.contributor.department | Department of Electrophysics | en_US |
| dc.contributor.department | Institute of Physics | en_US |
| dc.date.accessioned | 2014-12-08T15:28:12Z | |
| dc.date.available | 2014-12-08T15:28:12Z | |
| dc.date.issued | 2012-10-31 | en_US |
| dc.description.abstract | The ultrafast quasiparticle dynamics of Fe1+ySe1-xTex single crystals were investigated by dual-color transient reflectivity measurements (Delta R/R) from 4.3 to 290 K. The electron-phonon coupling strength lambda (= 0.16-0.01) and the temperature-dependent energy of longitudinal-acoustic phonons were, respectively, obtained from the relaxation time of a fast component and the period of an oscillation component in Delta R/R. Such a small lambda demonstrates the unconventional origin of superconductivity in FeSe. Moreover, the temperature-dependent Delta R/R exhibits anomalous changes at T-c, 90 K and 230 K, unambiguously revealing the phase transition as well as the phonon softening via the magnetoelastic effect. | en_US |
| dc.identifier.doi | 10.1088/1367-2630/14/10/103053 | en_US |
| dc.identifier.issn | 1367-2630 | en_US |
| dc.identifier.journal | NEW JOURNAL OF PHYSICS | en_US |
| dc.identifier.uri | http://dx.doi.org/10.1088/1367-2630/14/10/103053 | en_US |
| dc.identifier.uri | https://ir.lib.nycu.edu.tw/handle/11536/20420 | |
| dc.identifier.wosnumber | WOS:000310440200003 | |
| dc.language.iso | en_US | en_US |
| dc.title | Ultrafast dynamics and phonon softening in Fe1+ySe1-xTex single crystals | en_US |
| dc.type | Article | en_US |